CH3CH3+Br2-光照->CH3CH2Br+HBr
C2H6+2Br2-光照->C2H4Br2+2HBr
C2H6+3Br2-光照->C2H3Br3+3HBr
C2H6+4Br2-光照->C2H2Br4+4HBr
C2H6+5Br2-光照->C2HBr5+5HBr
C2H6+6Br2-光照->C2Br6+6HBr
一共六个反应
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